I did a search for that "TrojWare.BAT,DelTree@12190", there a loads of pages on Comodo forums and other sites about people getting that same Trojan and variations of it. I went to the knowledge base on Comodo, and they have no record of it. That file is most likely a false positive. When an antivirus scanner reports a file as being infected, when in fact it is not, that reporting is considered a false positive.
Try a good online Scanner and see if that so called "TrojWare.BAT,DelTree@12190" gets detected:
Code:
http://www.kaspersky.com/virusscanner
or
Code:
http://www.pandasecurity.com/activescan/index/